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Finding the Fourth Proportional to 238,978.18, 329,715.66 and 135,595.27

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Solution

The fourth proportional to 238,978.18, 329,715.66 and 135,595.27 is: 187,079.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,978.18 : 329,715.66 = 135,595.27 : x
  2. Step 2: Convert to fraction form
    238,978.18/329,715.66 = 135,595.27/x
  3. Step 3: Cross multiply
    238,978.18x = 329,715.66 × 135,595.27
  4. Step 4: Simplify right side
    238,978.18x = 44,707,883,940.93
  5. Step 5: Solve for x
    x = 44,707,883,940.93/238,978.18
  6. Step 6: Final answer
    x = 187,079.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.